DE940762C - Filter tube with inserted wedge-shaped bars - Google Patents

Filter tube with inserted wedge-shaped bars

Info

Publication number
DE940762C
DE940762C DEB701A DEB0000701A DE940762C DE 940762 C DE940762 C DE 940762C DE B701 A DEB701 A DE B701A DE B0000701 A DEB0000701 A DE B0000701A DE 940762 C DE940762 C DE 940762C
Authority
DE
Germany
Prior art keywords
wedge
filter
filter tube
openings
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEB701A
Other languages
German (de)
Other versions
DE1609020U (en
Inventor
Carl-Hans Dr-Ing Biedendieck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DEB701A priority Critical patent/DE940762C/en
Application granted granted Critical
Publication of DE940762C publication Critical patent/DE940762C/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/08Screens or liners
    • E21B43/086Screens with preformed openings, e.g. slotted liners
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/44Edge filtering elements, i.e. using contiguous impervious surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks

Description

Die Erfindung bezieht sich auf Filterrohre für die Erdölgewinnung u. dgl. Sie bezweckt, ein Filterrohr zu schaffen, welches die Bildung von Schlitzen kleinster Weite ermöglicht und gegenüber den bekannten Konstruktionen die Vorteile einer erheblich größeren Lebensdauer und ferner seiner Verwendbarkeit als sogenanntes wiederaufbohrbares Rohr besitzt. The invention relates to filter tubes for oil production u. The like. It aims to create a filter tube which allows the formation of slots smallest width and the advantages over the known constructions a considerably longer service life and also its usability as a so-called Has re-drillable tube.

Es sind bereits Filterrohre bekannt, deren Filterschlitze durch Einsetzen von keilförmigen Stegen in geradwandig begrenzte Öffnungen der Filterrohrwandung gebildet werden, die einerseits durch die Kante der Rohrwandöffnung, andererseits durch eine Kante des Steges begrenzt sind. There are already known filter tubes, the filter slots by insertion of wedge-shaped webs in straight-walled delimited openings in the filter tube wall are formed, on the one hand by the edge of the pipe wall opening, on the other hand are limited by an edge of the web.

Bei diesen Konstruktionen sind jedoch die Begrenzungen der Schlitze, die aus dem Werkstoff des Rohres selbst bestehen, in hohem Maße der verschleißenden Wirkung des Flüssigkeitsstromes ausgesetzt. Dieser Verschleiß führt zu einer schnellen Vergrößerung des Schlitzquerschnittes, so daß die Rohre schon nach vergleichsweise kurzer Benutzungsdauer unbrauchbar werden bzw. schlechte Ergebnisse liefern. In these constructions, however, the limitations of the slots, which consist of the material of the pipe itself, to a large extent the wearing ones Exposed to the effect of the flow of liquid. This wear leads to rapid Enlargement of the cross-section of the slot, so that the tubes are already comparatively become unusable or give poor results for a short period of time.

Gemäß der Erfindung werden die Rohre selbst der vers chleiß enden Wirkung des Flüssigkeitsstromes dadurch entzogen, daß die Filterschlitze ausschließlich von den Kanten von in jede der Schlitzöffnungen des Rohres eingelegten keilförmigen Stegen umgrenzt werden, die außer den oberen und unteren Begrenzungen auch die beiden seitlichen Begrenzungen der Öffnungen abdecken und in die Öffnungen so eingelegt sind, daß die abgeschrägten, einander zugekehrten SeitenfLächen der Stege ein sich nach dem Innern des Rohres zu keilförmig erweiterndes Profil des Filterschlitzes ergeben. According to the invention, the tubes themselves will end wear Effect of the liquid flow withdrawn by the fact that the filter slots exclusively from the edges of wedge-shaped inserted into each of the slot openings of the pipe Bridges are delimited, which apart from the upper and lower boundaries also the two Cover the lateral boundaries of the openings and insert them into the openings are that the beveled, facing side surfaces of the webs one towards the inside of the tube to a wedge-shaped widening profile of the filter slot result.

Es werden damit die Vorteile eines sich nach innen keilförmig erweiternden Schlitzes in bezug auf die Vermeidung von der Gefahr von Verstopfungen in optimaler Weise erzielt - im Gegensatz zu den bekannten Ausführungen, bei denen nur die durch den Mittelsteg gebildete Begrenzungslinie des Schlitzes keilförmig geneigt verläuft -, und alle Kanten des in dem Rohr gebildeten Schlitzes sind durch die eingesetzten Stege abgedeckt und dadurch geschützt. There are thus the advantages of an inwardly wedge-shaped widening Slot in terms of avoiding the risk of clogging in the most optimal way Way achieved - in contrast to the known designs, in which only the through the central web formed boundary line of the slot extends wedge-shaped inclined -, and all the edges of the slot formed in the tube are through the inserted Bridges covered and thus protected.

Abb. I stellt die neue Steganordnung in Ansicht und in Abb. 2 ein horizontaler Schnitt durch einen Teil des Filterrohres, aus dem die Bildung und Gestalt der Schlitze ersichtlich ist, dar. Fig. I shows the new bar arrangement in view and in Fig. 2 horizontal section through part of the filter tube from which the formation and Shape of the slots can be seen.

In den Abbildungen sind mit I die beiden miteinander zusammenwirkenden Stege, die den Seitenbegrenzungen 3 der Öffnung der Filterrohrwandtmg anliegen und zwischen sich den sich keilförmig nach innen erweiternden Schlitz 2 bilden, bezeichnet. In the figures, I are the two interacting with one another Web that rest against the side boundaries 3 of the opening of the Filterrohrwandtmg and between them form the wedge-shaped inwardly widening slot 2, designated.

Es lassen sich durch Verwendung der Stege gemäß der Erfindung parallele Schlitze bis zu 0,1 mm und noch kleinerer Weite noch technisch einwandfrei herstellen, ohne daß sie sich verstopfen. Die die Stege aufnehmenden Öffnungen in der Rohrwandung können durch übliche mechanische Schlitzmaschinen in der erforderlichen Weite und Länge hergestellt werden. It can be parallel by using the webs according to the invention Produce slots of up to 0.1 mm and even smaller widths in a technically flawless manner, without clogging. The openings in the pipe wall that accommodate the webs can be made by conventional mechanical slotting machines in the required width and Length to be made.

Die Stege bestehen vorzugsweise aus verschleißfestem Material. The webs are preferably made of wear-resistant material.

Claims (1)

PATENTANSPRUCH: Filterrohr mit durch Einsetzen von keilförmigen Stegen in geradwandig begrenzten Öffnungen der Filterrohrwandung geschaffenen Filterschlitzen, dadurch gekennzeichnet, daß in jeder der Öffnungen zwei den Filterschlitz bildende keilförmige Stege, die außer den oberen und unteren Begrenzungen auch die beiden seitlichen Begrenzungen der Öffnungen abdecken, so eingelegt sind, daß die angeschrägten, einander zugekehrten Seitenfiächen der eingelegten Stege ein sich nach dem Innern des Rohres keilförmig erweiterndes Profil des Filtersthlitzes ergeben. PATENT CLAIM: Filter tube with by inserting wedge-shaped webs Filter slots created in straight-walled openings in the filter tube wall, characterized in that in each of the openings two forming the filter slot wedge-shaped webs, which apart from the upper and lower boundaries also the two cover the side boundaries of the openings, inserted so that the angled, facing side surfaces of the inserted webs move inwards of the pipe result in a wedge-shaped widening profile of the Filtersthlitzes.
DEB701A 1949-11-17 1949-11-17 Filter tube with inserted wedge-shaped bars Expired DE940762C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB701A DE940762C (en) 1949-11-17 1949-11-17 Filter tube with inserted wedge-shaped bars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB701A DE940762C (en) 1949-11-17 1949-11-17 Filter tube with inserted wedge-shaped bars

Publications (1)

Publication Number Publication Date
DE940762C true DE940762C (en) 1956-03-29

Family

ID=6951979

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB701A Expired DE940762C (en) 1949-11-17 1949-11-17 Filter tube with inserted wedge-shaped bars

Country Status (1)

Country Link
DE (1) DE940762C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970494C (en) * 1954-01-22 1958-10-23 Ewald Arno Zdansky Precoat filter with an openwork, metallic support body for the precoat layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970494C (en) * 1954-01-22 1958-10-23 Ewald Arno Zdansky Precoat filter with an openwork, metallic support body for the precoat layer

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